| Summary: | 碩士 === 高苑科技大學 === 建築研究所 === 99 === According to energy conservation of buildings, heat isolation and daylight of
building openings are important factors. Double layer windows have been
widely used on construction in the world. Recently, it also began to be used
in Taiwan. This study installs mechanism of heat isolation into air layer of
double windows to reduce heat transmission to room and to compare with
natural daylight. Then further analyze the efficiency of heat loading and
energy conservation.
This research installs the test specimens on the west direction of lab in south
area of Taiwan. Following the previous study to choose the best type, we
change setting position, glass materials and isolated materials by experiments.
Then analyze the comprehensive effects of heat isolation and natural daylight.
There are some conclusions as the follows,
1. For the optimum type, it was better installed the south direction than the
west direction, but it still has effects for heat isolation in west direction.
2. Three kinds of glasses have about 1.0% to achieve the standard of daylight
rates. According to comprehensive effects, reflected window is the best
types for west direction. During afternoon, the effects are more obvious.
3. The result shows that install mechanism of heat isolation into air layer of
double windows could reduce indoor glass surface temperature. Type of
roller curtain and fan with water curtain has the best effect, it reduced about
5.77 ℃ in clear glass, 6.61 ℃ in reflected glass and 6.22 ℃ in reflected
glass. During afternoon, the effects are more excellent.
4. For comprehensive effects, Clear glass installs four mechanisms of heat
isolation have superior performances of heat isolation and natural daylight.
Type of roller curtain and fan with water curtain has the best effect that
could reduce temperature about 5.77 ℃, its daylight rate is about 0.74%.
Type of blind has the second effect that could reduce temperature about
4.72 ℃, its daylight rate is about 0.78%.
5. Propose the best optimum types, according to 0.7% by standard of daylight
and 4℃ by heat reduction. For comprehensive effects, type of water
curtain in reflected glass has better daylight and heat isolation that is
recommended the best optimum type, type of fan with water curtain in
reflected glass has recommended the second one, and type of fan with water
curtain in glass has recommended the third one.
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